Valve



UNITED STATES PATENT OFFICE.

l JOSEPH H. GRUBB AND RALPH H. BINNS, OF PITTSBURG, PENNSYLVANIA.

VALVE.

SPECIFICATION forming part of Letters Patent NO.' 534,043, datedFebruary 12', 1 895.

Application filed September 2B, 1894- Serial No. 524,356. (No model.)

residing at Pittsburg, in the county of Alle-` gheny and State ofPennsylvania, have invented or discovered new and useful Improve-v mentsin Valves, of which the following is a specification.

In the accompanying drawings,which make part ofthis specification,Figure 1, is an elevation of the valvevapplied to a water column. Fig.2, is abroken away elevation of the valve and lever enlarged, and Fig.3, a plan of same. Our invention relates to that class of steam valveswhich are intended to rise and fall automatically through the actuationof a lever directly or indirectly acting upon the valve, said valvebeing contained in an inclosing chamber. X In the accompanying drawingswhich make part of this specification, we have illustrated the valve asapplied to a Water column containing a float, and used to indicate thelevel of the waterin a boiler, at the two critical points of high andlow water, but we desire to claim our valve also independently of suchconnection, and for all uses to which it is susceptible, such as in pumpregulators and analogous appliances.

In the several views, 2, is a valve case, havingseat 3.

4, is a steam passage through the case and 5, 5, lateral steam passagesconnecting with 4..

6, is a threaded lower end of the case by which it may be attached tothe water column.` Upon the top of said valve case are fulcrum points,7, 7, at front and back, here shown as ribs running clear across thecase and leaving between themselves a depression for the entrance of thesteam so that the valve stem head may not stick.

8, is a guide projecting from the top of the valve case to preventlateral motion.

9, is the cap of the valve stem.

10, is the valve stem and 11, the plug valve at the lower end thereof.The lever which operates the valve has a Weighted head 12, with suitableaperture 13, to pass the valve stem and slot 22, or equivalent openingfor guide 8.

14., is a rearwardly projecting arm of the lever here shown with an eye15 at rear end to pass iioat rod 16, having float 17. The float rod isprovided with knockers 18, 18, in the usual way to engage eye 15.

' 19, is the shell of the water column connected with the boiler in theusual manner.

20, is a steam operated alarm, and 2l, is a steam passage leading fromthe valve case to said alarm.

ln operation, as the Water in the boiler rises or falls beyond apredetermined height, the knockers 18, 1S, set at corresponding pointson the rod 16, will engage with eye 15, and raise or depress arm 14. Ineither event head 12, fulcruming either' in front or back of the valvecase will be raised, lifting valve stern cap 9 and sounding the alarm.When the level of the Water is at its proper height the pressure of thesteam will force the valve back to its seat. That the pressure of thesteam may act freelyit is desirable that the Weight of cap, valve stemand lever head, should counterbalance Weight of rearwardly projectingarm of lever. When soconstructed the valve may seat itself independently0f steam pressure. Guide 8 may be omitted and arm 14 variously modifiedin shape or made double to act withtwo float rods, one on each side ofthe case. A y

The shape and Weight of lever head 12 and the particular openings insame, may be varied by the skillful designer, as may be the peculiarshape and size of the fulcrum points 7, 7.

The weight necessary to overcome Weight of arm 14 may be divided asdesired between head 1 2, cap 9 and valve stem 10.

Having described ourinvention, We claim- 1. The combination of aninclosing chamber; a Valve case secured in said chamber; a valve havinga stem and cap;- a lever provided with a head having an opening throughwhich the valve stem passes, said head lying between the top surface ofthe valve case and the under surface of the cap of the valve stem, andsaid lever and valve being removable from the case by merely lifting thevalve stem.

2. The combination of avalve case; a valve roo having astern and cap; alever provided with our hands `this 17th day of September, A. D. aheadhaving an opening through which the 1894. valve stem passes, said headlying between .TOSEPH I-I. GRUBB. the top surface of the valve case andthe un- A v 5 der surface of the cap of the Valve stem, and RALPH H'BINNS' said lever and valve being removable from Witnesses: the ease bymerely lifting the valve stem. WM. L. PIERCE In testimony whereof Wehave hereunto set WILLIAM BEAL.

